/*
 * Copyright (c) 2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import { ts, rule } from "qvog-dsl";

const SEVERITY = 2;
const DOC_PATH = 'docs/no-undeclared-variable.md';
const DESCRIPTION = 'Using undeclared variables can cause runtime errors and should be avoided. Declare variables before using them.';

export default rule()
  .match(ts.isIdentifier)
  .when(node => {
      // 检查标识符是否有声明
      // 如果父节点不是声明类节点，则可能是未声明变量
      const parent = node.parent;
      const isDeclaration = ts.isVariableDeclaration(parent) 
        || ts.isParameter(parent) 
        || ts.isFunctionDeclaration(parent)
        || ts.isClassDeclaration(parent)
        || ts.isInterfaceDeclaration(parent);
        
      return false;
  })
  .report({
      severity: SEVERITY,
      description: DESCRIPTION,
      docPath: DOC_PATH,
  });
